OEM Rotary Joint for Komatsu PC4000, PC5500 and PC8000 (ref. 997 300 40)
A rotary (centre) joint transfers hydraulic oil between the rotating upper structure and the fixed undercarriage. Rotary joints wear at the internal seals; worn seals cause cross-port leakage and loss of travel or swing function.
Key facts
- Part: Rotary Joint, new replacement for Komatsu PC4000, PC5500 and PC8000
- Komatsu OEM ref.: 997 300 40 (also written 99730040)
- Interchangeable references: 2 additional Komatsu numbers (listed below), incl. 962 425 40, 910 199 40
- Fits: Komatsu PC4000, PC5500 and PC8000 (mining excavator)
- Condition: New, to OEM specification
- HD Mining Parts SKU: KMP-RJ-1NDK6W
- Supplied by: HD Mining Parts (worldwide export, quote-based)
Interchangeable reference numbers
This part is interchangeable with the following Komatsu reference numbers (including superseded and alternative references) and can be supplied in place of any of them. Each is shown with and without spaces:
- 962 425 40 / 96242540
- 910 199 40 / 91019940
Each part is matched by reference number and technically verified before dispatch, with traceable sourcing and export-ready delivery; availability and lead time on request.
Frequently asked questions
What part is Komatsu OEM number 997 300 40?
It is the rotary joint for Komatsu PC4000, PC5500 and PC8000; HD Mining Parts supplies a new replacement under SKU KMP-RJ-1NDK6W.
Is 962 425 40 interchangeable with 997 300 40?
Yes, 962 425 40 (96242540) is an interchangeable Komatsu reference for this rotary joint and can be replaced by it.
Request Komatsu OEM ref. 997 300 40, or browse all Hoses Pipes and Fittings and Komatsu PC4000 spare parts, Komatsu PC5500 spare parts, Komatsu PC8000 spare parts, or request a quotation.